Homologous series of iron pnictide oxide superconductors (Fe 2As2) [Can+1 (Sc,Ti)nOy] (n=3,4,5) with extremely thick blocking layers

Hiraku Ogino, Shinya Sato, Kohji Kishio, Jun Ichi Shimoyama, Tetsuya Tohei, Yuichi Ikuhara

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    Abstract

    We have discovered homologous series of iron pnictide superconductors (Fe2As2) [Can+1 (Sc,Ti)nO y] (n=3,4,5). These compounds have extremely thick blocking layers up to quintuple perovskite layers sandwiched by the Fe2As2 layers. These samples exhibited bulk superconductivity with relatively high Tc up to 42 K. The relationship between Tc and the iron-plane interlayer distance suggested that Tc of the iron based superconductor is basically determined by the local structure of Fe2 As2 layer.

    Original languageEnglish
    Article number072506
    JournalApplied Physics Letters
    Volume97
    Issue number7
    DOIs
    Publication statusPublished - 2010 Aug 16

    ASJC Scopus subject areas

    • Physics and Astronomy (miscellaneous)

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